Carriage-wrench



' .I o Mdel. V D; TRUE.

' CARRIAGE WRBNGEy I v No. 292,186. Patented Jan 22, 1884. v

I E5555 5 INVENTEIRI 1?} has #1312 I 5 balls or weights A.

UNITED STATES PATENT OFFICE.

DAVID TRUE, or SALISBURY, MASSAGHUSETTS.-

CARRIAGE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 292,186, dated January 22, 1884. -Application filed July 23, 1883. (N model.)

provements in Carriage-Wrenches, of which the following is a specification.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure 1 is a perspective view of a wrench embodying my invention. Fig. 2 is alongitudinal section of the same. Fig. 3 is a view of the socket or box detached.

A is a bar, provided on its face with the central circular flange, A, and at its ends with the This bar A is provided with a central opening, by means of which it may be rotated on thehandle B, which is provided with a ferrule, b, of metallic substance, such ferrule forming a bearing for the bar A.

The bar is prevented from becoming detached from the handle by means of the screw b. Thus far there is nothing novel in the device.

0 is the socket or box for grasping the nut, secured to or projecting from the base or back D. Pins a, projecting from the bar A into corresponding openingsin the back D, cause it to partake of any rotary motion imparted to the bar.

What remains, and in what my invention 0 consists, is means for preventing the socket from dropping from the bar. I accomplish my obj ectv-iz., the holding of the socketback D in place against the face of the bar A and within the flangeAby cutting an annu- 3 5 lar groove, D, in the periphery of the circular base D, and placing in such groove a ring, E, made of rubber or other elastic or contractile substance or composition of matter, such ring being thick enough to extend slightly beyond 0 the mouth of the groove, andsuificiently to press against the inside surface of the flange A. By means of the friction thus produced the back and. socket D O are held against the bar A, allowing the pins (1 to remain in engage- 4 5 ment.

into it.

The groove Dmay be rectangular or of any shape, but is shown in the drawings as dovetailed, the better to hold the ring E, fitting Sufiicient depth is necessary to pre vent the ring from rolling over and out.

The wrench thus produced may be used in connection with carriage-nuts, or elsewhere, as deemed desirable.

In operation, the socket C is placed over the nut, the handle B held firmly in thehand, and the bar rotated on the handle.

The socket is easily removable, and others of different sizes and shapes may be readily applied.

If desired, the flange A and back D may be of a corresponding shape other than circular, in which case the pins 0. will not be needed to communicate the rotation.

Having thus fully described my invention,

what I claim, and desire to secure by Letters socket or portion applied to the nut, said socket being provided with the back or base D, which is provided with the groove D, and the elastic ring E, resting in said groove and compressed against the inner surface of said flange, substantially as and for the purpose set forth.

2. In a wrench, the combination of the following elements, viz: the socket or portion adapted to be applied to the nut, the bar or portion adapted to rotate the socket, and an intermediate elastic substance arranged and appliedto hold the said socket and bar togetherby its own elasticity and friction, substantially as and for the purpose hereinbefore set forth.

DAVID TRUE.

Witnesses:

GEO. W. GATE, CHARLES E. KEENARD. 

